{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8310-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8310-7","canonicalUrl":"https://aoctrl.com/siemens/5SY8310-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8310-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8310-7 miniature circuit breaker, 3-pole, C-curve, 40 kA at 400 V AC per IEC 60947-2, 5 kA UL 1077, 3 MW units wide.","salesMarkdown":"The Siemens SENTRON 5SY8310-7 is a 3-pole miniature circuit breaker with a C-curve tripping characteristic, rated 40 kA at 400 V AC per IEC 60947-2 and 5 kA per UL 1077. The C-curve means it holds through inrush up to 5–10× rated current before tripping magnetically — right for motor starters, transformer primaries, and lighting banks where the start-up spike is brief but real. The 40 kA interrupting rating at 400 V AC is the figure that governs fault-clearing capability on an industrial 400 V line; the UL 1077 rating (5 kA) is the supplementary-protector limit for North American panels. Three modular-width units (54 mm) snap onto the DIN rail, and the top/bottom combined terminals accept both busbar and wire without re-termination. Fastens via the quick-assembly system onto a DIN rail; mounting position is any orientation. Ambient range from -40 °C to 75 °C, with derating for humidity (95% at 55 °C down to 35% at 75 °C). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Halogen-free and silicon-free construction, sealable for tamper-evident installations. The DC breaking capacity is 15 kA at 60 V (max 72 V). For single- or multi-phase AC operation, rated voltage goes to 440 V. The 5 kA UL 1077 / CSA C22.2 No. 235 rating covers supplementary protection in North American panels.","metaTitle":"Siemens SENTRON 5SY8310-7 MCB, 3P C-curve, 40 kA IEC, 10 kA","metaDescription":"Siemens SENTRON 5SY8310-7 miniature circuit breaker, 3-pole, C-curve, 40 kA at 400 V AC per IEC 60947-2, 5 kA UL 1077. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60947-2 / UL1077","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to IEC 60947-2 rated value":"40 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=15308&mlfb=5SY8310-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY8310-7/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY8310-7 and what is the lead time?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock or lead-time figures published here."},{"question":"What is the closest functional second-source for 5SY8310-7?","answer":"The 5SY6332-7CC is a peer in the same SENTRON family, but it is a 2-pole unit versus the 3-pole 5SY8310-7. They share the same C-curve and similar breaking capacities, but the pole count difference means they are not drop-in replacements — the 5SY8310-7 is the correct 3-pole variant for a 3-phase line."},{"question":"What are the key dimensions of 5SY8310-7?","answer":"Depth 76 mm, width 54 mm (3 modular units), height 90 mm, installation depth 70 mm."},{"question":"What compliance documentation does Siemens provide for 5SY8310-7?","answer":"The breaker carries IEC / EN 60947-2 and UL 1077 certifications. It is halogen-free and silicon-free. For RoHS, REACH, and detailed compliance certificates, the manufacturer's documentation is available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8310-7","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SY8310-7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}